43'2 Transactions. — Botany. 



Section B. 

 Calyptra pilose. Peristome double. 



16. Orthotrichum cylindrotheeum, sp. nov. 



Plants monoecious, brownish-green, growing in small 

 patches, Jin. high, branched by innovations. Branches ex- 

 tremely short, fastigiate. Leaves small, closely imbricating, 

 erecto-patent ; lower ones ovate-subulate, acute ; middle and 

 upper very similar in their outline, ovate-lanceolate, tapering 

 into an acute point, slightly falcate, concave. Margins entire. 

 Sometimes a few leaves are recurved from the base to near 

 the apex. Nerve continued to the apex. Areola : Upper 

 punctiform ; lower small, quadrate. Leaves when dry erect 

 and adpressed. Perich&tial leaves erect, about the same 

 length as the upper ones, narrow, ovate-lanceolate, acutej 

 concave. Margins plain, entire. Nerve continued to the apex. 

 Fruitstalk erect, ^in. long, stout. Capsule exserted, narrow, 

 pyriform, tapering into the fruitstalk. Operculum convex, 

 apiculate, one-fourth the length of the capsule. Peristome 

 double, outer 8 bigeminate, entire ; inner 8 cilia alternating 

 with the outer, consisting of two rows of cells. Calyptra 

 mitriform, shorter than the capsule, plicate, pilose. Male 

 inflorescence gemmaceous in the axil of a leaf below the 

 perichaetium. 



Hob. Trees, Mount Torlesse ; January, 1886. Collected 

 by E. B. 



17. Orthotrichum tortuiosum, sp. nov. 



Plants monoecious, pale-green, growing in small tufts about 

 ■J-in. high, branched by innovations. Branches short, spread- 

 ing, fastigiate. Leaves closely imbricating, spreading, flexu- 

 ous ; middle and upper leaves nearly similar in their outline, 

 ovate-lanceolate acute, base erect, sheathing, convolute. Mar- 

 gins plain, entire, nerved to the apex. Areola : Upper puncti- 

 form, lower linear-oblong. Leaves very crisp when dry, 

 Perichatial leaves nearly erect, much larger than the upper 

 ones, ovate-lanceolate, tapering into an obtuse point, sheath- 

 ing at the base, semi-convolute. Margins plain, entire, nerved 

 to the apex. Fruitstalk erect, -|in. long. Capsule subpyri- 

 form, small. Peristome double : outer 8 bigeminate, entire or 

 emarginate on the middle line ; inner 8 cilia alternating with 

 the outer, consisting of one single row of cells. Operculum 

 stout, conico-rostrate. Calyptra mitriform, longer than the 

 capsule, plicate, pilose. Hairs scabrid. Male inflorescence, 

 gemmaceous in the axil of a leaf below the perichaetium. 



Hab. Scrub at head of Eiver Clinton, Otago ; January, 

 1890. Collected by B. B. 



